Figure 1

Plasma arginine (A), PBMC arginase 1 RNA (B) and protein (C), plasma arginase enzymatic activity (D), PBMC arginase 2 mRNA (E), and PBMC NOS2 RNA (F). The numbers of subjects and p values for the statistical pairwise comparisons (Mann-Whitney U) appear below the figures. The horizontal bars represent the geometric means.